The most common and most likely answer to this crossword clue is the 7 letter word CLIMBER
I've seen this crossword clue in The Daily Telegraph
C
L
I
M
B
E
R
More clues leading to the result CLIMBER
- Crampon primarily used by supple mountaineer
- Note lithe mountaineer
- Originally cost flexible, one going up (7
- Chapter on supple mountaineer
- Ivy perhaps, chilly at first, then flexible
- Caught by flexible vine, say
- One is agile on top of Cairngorms?
- One might aspire to go after social type of plant
- Chennai's top and active mountaineer
Buddy explains!
The straight part
We know that "One is" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case one is = climber.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CLIMBER mean?
CLIMBER noun- One who climbs.
- A plant that climbs, such as a vine.
- A bird that climbs, such as a woodpecker or a parrot.
- A rider who specializes in riding uphill quickly.
- To climb; to mount with effort; to clamber.